The MPLS-OPS Archive

["Zhou Yun\(163\)" <yzhou@163.net>]

I have 2 questions about MPLS, could someone help me? Thanks!
1. If we configure 2 directly connnected routers to setup a remote
session, what happened? Whether the target session can be set up while
the the normal local session is setup also by the means of discovery
mechanism of the multicast hello packets. How to differ initialization
messages for these 2 sessions? Assume that a LSR acts as passive site
LSR for both sessions, then it will receive 2 initialization messagea
with same PEER LDPID and LOCAL LDPID.

2. Can RSVP-TE initiate tearing down a LSR from a transit LSR? Assume
that interface down notification received at a transit LSR. In my
opinion, it will like that: RSVP-TE sends Path Err for LSPs depend on
this interface, and when the ingress LSR receives the Path Err message
will send Path Tear message to tear down the LSR. And same to the Loop
Detected Routine. Am I right?

3. When RSVP-TE setup a LSP, the resource reservation is on the
outgoing interface or both incoming interface and outgoing interface?

4. If we preempt a low holding priority LSP, whether the LSP will be
teared down or just the resource will be released?